Any Positive Feedback Rate Increases the Capacity of Strictly Less-Noisy Broadcast Channels

TL;DR

This paper introduces two coding schemes for discrete memoryless broadcast channels with limited feedback, demonstrating that any positive feedback rate enhances capacity in strictly less-noisy channels.

Contribution

It presents novel coding schemes that leverage even minimal feedback to improve capacity in a specific class of broadcast channels.

Findings

Positive feedback rate increases capacity in strictly less-noisy DMBCs.

The proposed schemes outperform no-feedback capacity regions.

Any positive feedback rate yields capacity gains.

Abstract

We propose two coding schemes for discrete memoryless broadcast channels (DMBCs) with rate-limited feedback from only one receiver. For any positive feedback rate and for the class of strictly less-noisy DMBCs, our schemes strictly improve over the no-feedback capacity region.